<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            display: grid;
            /* display: flex;
            flex-wrap: wrap; */
            /* width: 500px; */
            grid-template-columns: repeat(auto-fill,100px);
            /* background-color: red; */
            justify-content: space-between;
            gap: 30px;
        }
        .item {
            border: 1px solid #333;
            height: 100px;
            /* width: 23%; */
            background-color: #fff;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="item">1</div>
        <div class="item">2</div>
        <div class="item">3</div>
        <div class="item">4</div>
        <div class="item">5</div>
        <div class="item">6</div>
        <div class="item">7</div>
        <div class="item">8</div>
        <div class="item">9</div>
        <div class="item">10</div>
    </div>
</body>
</html>